libpakfire: parser: Set empty values to NULL

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>

diff --git a/src/libpakfire/parser/grammar.y b/src/libpakfire/parser/grammar.y
index e034a1fb4debb7568bc76b5e7cba1af77a906b15..9699f1e5094d6c321fa15c5833dbbde012246749 100644 (file)
--- a/src/libpakfire/parser/grammar.y
+++ b/src/libpakfire/parser/grammar.y
@@ -92,7 +92,10 @@ words                                                : WORD
                                                                $$ = $1;
                                                        }
                                                        | words WHITESPACE WORD
-                                                       | /* empty */;
+                                                       | /* empty */
+                                                       {
+                                                               $$ = NULL;
+                                                       };
 
 line                                           : whitespace words NEWLINE
                                                        {
@@ -101,7 +104,10 @@ line                                               : whitespace words NEWLINE
 
 text                                           : text line
                                                        | line
-                                                       | /* empty */;
+                                                       | /* empty */
+                                                       {
+                                                               $$ = NULL;
+                                                       };
 
 block_opening                          : variable NEWLINE
                                                        {